$ git clone -n https://src.fedoraproject.org/rpms/plasma-desktop.git /var/lib/mock/f41-build-847795-164127/root/chroot_tmpdir/scmroot/plasma-desktop
Cloning into '/var/lib/mock/f41-build-847795-164127/root/chroot_tmpdir/scmroot/plasma-desktop'...
$ git fetch origin 0381e1323afa7add360b927596baaedf7b86391c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-desktop
 * [new ref]         0381e1323afa7add360b927596baaedf7b86391c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0381e13 6.1.5